00299nam a22001097a 4500003000400000008004100004082001400045100002500059245004600084260005100130300000800181OSt231230b        |||||||| |||| 00| 0 eng d  a627bG96W  aGupta, Bhagirath Lal  aWater resources engineering and hydrology  aDelhibStandard Publication Distributorsc1979  a639